/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:28:35,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:28:35,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:28:35,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:28:35,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:28:35,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:28:35,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:28:35,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:28:35,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:28:35,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:28:35,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:28:35,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:28:35,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:28:35,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:28:35,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:28:35,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:28:35,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:28:35,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:28:35,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:28:35,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:28:35,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:28:35,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:28:35,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:28:35,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:28:35,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:28:35,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:28:35,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:28:35,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:28:35,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:28:35,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:28:35,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:28:35,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:28:35,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:28:35,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:28:35,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:28:35,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:28:35,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:28:35,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:28:35,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:28:35,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:28:35,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:28:35,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:28:35,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:28:35,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:28:35,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:28:35,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:28:35,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:28:35,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:28:35,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:28:35,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:28:35,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:28:35,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:28:35,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:28:35,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:28:35,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:28:35,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:28:35,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:28:35,500 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:28:35,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:28:35,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:28:35,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:35,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:28:35,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:28:35,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:28:35,502 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:28:35,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:28:35,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:28:35,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:28:35,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:28:35,847 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:28:35,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-17 17:28:35,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d318b46/d99215d2f6bf4320a020476eb070b02f/FLAG3c3ae655a [2020-07-17 17:28:36,519 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:28:36,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-17 17:28:36,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d318b46/d99215d2f6bf4320a020476eb070b02f/FLAG3c3ae655a [2020-07-17 17:28:36,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d318b46/d99215d2f6bf4320a020476eb070b02f [2020-07-17 17:28:36,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:28:36,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:28:36,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:36,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:28:36,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:28:36,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:36" (1/1) ... [2020-07-17 17:28:36,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611e3a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:36, skipping insertion in model container [2020-07-17 17:28:36,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:36" (1/1) ... [2020-07-17 17:28:36,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:28:36,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:28:37,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:37,278 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:28:37,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:37,387 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:28:37,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37 WrapperNode [2020-07-17 17:28:37,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:37,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:28:37,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:28:37,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:28:37,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... [2020-07-17 17:28:37,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:28:37,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:28:37,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:28:37,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:28:37,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:28:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:28:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 17:28:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 17:28:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 17:28:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 17:28:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 17:28:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 17:28:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 17:28:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 17:28:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 17:28:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 17:28:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 17:28:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 17:28:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 17:28:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 17:28:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 17:28:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 17:28:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 17:28:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 17:28:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 17:28:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 17:28:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 17:28:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 17:28:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 17:28:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 17:28:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 17:28:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 17:28:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 17:28:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:28:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:28:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 17:28:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 17:28:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 17:28:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 17:28:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 17:28:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 17:28:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 17:28:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 17:28:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 17:28:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 17:28:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 17:28:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 17:28:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 17:28:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 17:28:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 17:28:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 17:28:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 17:28:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 17:28:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 17:28:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 17:28:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 17:28:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 17:28:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 17:28:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:28:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:28:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:28:38,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:28:38,112 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-17 17:28:38,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:38 BoogieIcfgContainer [2020-07-17 17:28:38,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:28:38,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:28:38,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:28:38,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:28:38,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:28:36" (1/3) ... [2020-07-17 17:28:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2159c7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:38, skipping insertion in model container [2020-07-17 17:28:38,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:37" (2/3) ... [2020-07-17 17:28:38,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2159c7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:38, skipping insertion in model container [2020-07-17 17:28:38,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:38" (3/3) ... [2020-07-17 17:28:38,126 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-07-17 17:28:38,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:28:38,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-17 17:28:38,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-17 17:28:38,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:28:38,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:28:38,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:28:38,184 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:28:38,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:28:38,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:28:38,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:28:38,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:28:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-07-17 17:28:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 17:28:38,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:38,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:38,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:38,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:38,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1451075683, now seen corresponding path program 1 times [2020-07-17 17:28:38,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:38,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310399011] [2020-07-17 17:28:38,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:38,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310399011] [2020-07-17 17:28:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:38,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:28:38,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557704855] [2020-07-17 17:28:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:28:38,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:38,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:28:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:28:38,488 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-07-17 17:28:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:38,717 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2020-07-17 17:28:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:28:38,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 17:28:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:38,730 INFO L225 Difference]: With dead ends: 176 [2020-07-17 17:28:38,731 INFO L226 Difference]: Without dead ends: 83 [2020-07-17 17:28:38,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:28:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-17 17:28:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-17 17:28:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-17 17:28:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-07-17 17:28:38,784 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 22 [2020-07-17 17:28:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:38,785 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-07-17 17:28:38,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:28:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-07-17 17:28:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 17:28:38,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:38,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:38,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:28:38,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash -410944389, now seen corresponding path program 1 times [2020-07-17 17:28:38,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:38,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030635415] [2020-07-17 17:28:38,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:38,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030635415] [2020-07-17 17:28:38,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:38,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 17:28:38,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324007877] [2020-07-17 17:28:38,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:28:38,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:28:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:28:38,944 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 7 states. [2020-07-17 17:28:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:39,307 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2020-07-17 17:28:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:28:39,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-17 17:28:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:39,310 INFO L225 Difference]: With dead ends: 148 [2020-07-17 17:28:39,310 INFO L226 Difference]: Without dead ends: 146 [2020-07-17 17:28:39,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:28:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-17 17:28:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 81. [2020-07-17 17:28:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 17:28:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-07-17 17:28:39,330 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 23 [2020-07-17 17:28:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:39,330 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-07-17 17:28:39,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:28:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-07-17 17:28:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 17:28:39,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:39,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:39,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:28:39,333 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash -922794179, now seen corresponding path program 1 times [2020-07-17 17:28:39,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:39,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860113566] [2020-07-17 17:28:39,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:39,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860113566] [2020-07-17 17:28:39,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:39,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:28:39,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089374277] [2020-07-17 17:28:39,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:28:39,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:28:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:39,457 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 6 states. [2020-07-17 17:28:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:39,688 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-07-17 17:28:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:28:39,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-17 17:28:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:39,690 INFO L225 Difference]: With dead ends: 142 [2020-07-17 17:28:39,691 INFO L226 Difference]: Without dead ends: 140 [2020-07-17 17:28:39,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-17 17:28:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 79. [2020-07-17 17:28:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-17 17:28:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-07-17 17:28:39,709 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 24 [2020-07-17 17:28:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:39,709 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-07-17 17:28:39,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:28:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-07-17 17:28:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 17:28:39,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:39,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:39,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:28:39,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1955200303, now seen corresponding path program 1 times [2020-07-17 17:28:39,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:39,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854980167] [2020-07-17 17:28:39,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:40,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854980167] [2020-07-17 17:28:40,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:40,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-17 17:28:40,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473490579] [2020-07-17 17:28:40,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 17:28:40,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:40,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 17:28:40,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:28:40,090 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2020-07-17 17:28:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:40,872 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-07-17 17:28:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 17:28:40,873 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-07-17 17:28:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:40,875 INFO L225 Difference]: With dead ends: 223 [2020-07-17 17:28:40,875 INFO L226 Difference]: Without dead ends: 177 [2020-07-17 17:28:40,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:28:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-07-17 17:28:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2020-07-17 17:28:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-17 17:28:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-07-17 17:28:40,920 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 31 [2020-07-17 17:28:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:40,921 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-07-17 17:28:40,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 17:28:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-07-17 17:28:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 17:28:40,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:40,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:40,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:28:40,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2043057935, now seen corresponding path program 1 times [2020-07-17 17:28:40,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:40,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216901622] [2020-07-17 17:28:40,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:41,001 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:28:41,002 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:28:41,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:28:41,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:28:41 BoogieIcfgContainer [2020-07-17 17:28:41,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:28:41,045 INFO L168 Benchmark]: Toolchain (without parser) took 4275.86 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 103.1 MB in the beginning and 179.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:41,046 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:28:41,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.60 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.7 MB in the beginning and 171.6 MB in the end (delta: -68.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:41,048 INFO L168 Benchmark]: Boogie Preprocessor took 65.17 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:41,049 INFO L168 Benchmark]: RCFGBuilder took 663.27 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 118.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:41,050 INFO L168 Benchmark]: TraceAbstraction took 2923.74 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 118.0 MB in the beginning and 179.5 MB in the end (delta: -61.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:28:41,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 617.60 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.7 MB in the beginning and 171.6 MB in the end (delta: -68.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.17 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 663.27 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 118.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2923.74 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 118.0 MB in the beginning and 179.5 MB in the end (delta: -61.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L999] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1007] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1008] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1009] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1009] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1011] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1013] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1015] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1015] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] COND TRUE !(2 == x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 773 SDslu, 889 SDs, 0 SdLazy, 818 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...